-aster, -astering, -asterism, -astery, -astress, -astry

(Latin: something that is inferior, small, or shallow; expressing incomplete resemblance)

philosophastry (s) (noun), philosophastries (pl)
A shallow or pseudo-philosophy: Joan read about philosophastry in one of her books on principles and doctrines as being a kind of spurious or pretended philosophy.
pilaster
1. A rectangular column with a capital and base, projecting only slightly from a wall as an ornamental motif.
2. A shallow rectangular feature projecting from a wall, having a capital and base and usually imitating the form of a column.
poetaster
1. An inferior poet; an inferior rhymer, or writer of verses.
2. A dabbler in poetic art; a writer of indifferent verse.
3. A petty or paltry poet; a writer of poor or trashy verse; a rimester.
poetastering
1. Being a poetaster.
2. Composing poor or feeble verse.
poetasterism, poetastery, poetastry
1. The work of a poetaster.
2. Feeble verse or versification.
poetastress
A female poetaster.
poetastric, poetastrical
Of, pertaining to, or of the nature of, a poetaster.
politicaster
1. A second rate politician or an incompetent political leader.
2. A petty politician; a pretender in politics.
3. A petty, feeble, or contemptible politician.
rhetoricaster (s) (noun), rhetoricasters (pl)
Someone who expresses language poorly in an attempt to persuade or to influence others: Madeline was diagnosed by her doctor as a rhetoricaster because she had so much difficulty in communicating with people.
scientaster (s) (noun), scientasters (pl)
Someone who is a so-called scientist who is supposed to be a knowledgeable and skillful person but who is not only inferior but who is not even a real scientist.
Senecaster
An imitator of Seneca.
theologaster (s) (noun), theologasters (pl)
1. A pretender or quack; slang for someone who makes false claims in theology.
2. A petty, paltry, or shallow theologian.
theologastric (adjective)
Of or pertaining to someone who makes false religious claims.
witticaster
A petty or inferior wit; a witling (one who fancies himself/herself a wit; a pretender to being a wit; one who utters light or feeble witticisms).